Post‐traumatic stress, prevalence of temporomandibular disorders in war veterans: Systematic review with meta‐analysis

Abstract

IntroductionThe physical and psychological effects of war are not always easy to detect, but they can be far‐reaching and long‐lasting. One of the physical effects that may result from war stress is temporomandibular disorder (TMD).ObjectiveTo evaluate the prevalence of TMD sign and symptoms among war veterans diagnosed with PTSD.MethodsWe systematically searched in Web of Science, PubMed and Lilacs for articles published from the inception until 30 December 2022. All documents were assessed for eligibility based on the following Population, Exposure, Comparator and Outcomes (PECO) model: (P) Participants consisted of human subjects. (E) The Exposure consisted of exposition to war. (C) The Comparison was between war veterans (subjects exposed to war) and subjects not exposed to war. (O) The Outcome consisted of presence of temporomandibular disorders sign or symptoms (we considered pain to muscle palpation in war veterans).ResultsForty studies were identified at the end of the research. We chose only four study to draw up the present systematic study. The included subjects were 596. Among them, 274 were exposed to war, whereas the remaining 322 were not exposed to war stress. Among those exposed to war, 154 presented sign/symptoms of TMD (56.2%) whereas only 65 of those not exposed to war (20.18%). The overall effect revealed that subjects exposed to war and diagnosed with PTSD had a higher prevalence of TMD signs (pain at muscle palpation) than controls (RR 2.21; 95% CI: 1.13–4.34), showing an association PTSD war‐related and TMD.ConclusionsWar can cause lasting physical and psychological damage that can lead to chronic diseases. Our results clearly demonstrated that war exposure, directly or indirectly, increases the risk of developing TMJ dysfunction and TMD sign/symptoms.

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